Truck rack



FIG. 1 is a front view of a truck rack showing my new design;

FIG. 2 is a left-side view of the truck rack;

FIG. 3 is a right-side view of the truck rack;

FIG. 4 is a top side view of the truck rack;

FIG. 5 is a bottom side view of the truck rack; and,

FIG. 6 is a back view of the truck rack. 

CLAIM I claim an ornamental design for a truck rack, as shown and described. 